我无法使用命令
import matplotlib.pyplot as plt
之前我使用过我的脚本，但由于我使用
更新了我的anaconda，因此它们不再起作用了conda -update all
我收到一条很长的错误消息，但我真的不明白这是什么问题，请参阅随附的代码。任何人都知道如何解决它？我甚至已经卸下anaconda并重新安装它但它还没有修复它？我也只更新了使用公寓的marplotlib，但它没有帮助。有什么建议吗？
run transform.py
/Users/tfridrich/anaconda/lib/python2.7/site-packages/matplotlib/font_manager.py:273:UserWarning: Matplotlib is building the font cache using fc-list. This may take a moment.
warnings.warn('Matplotlib is building the font cache using fc-list. This may take a moment.')
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
/Users/tfridrich/computing/Log_spectral_analysis/test01/transform.py in <module>()
6 import scipy.fftpack
7 #import matplotlib as plt
----> 8 import matplotlib.pyplot as plt
9 from las import LASReader
10 import checknumber
/Users/tfridrich/anaconda/lib/python2.7/site-packages/matplotlib/pyplot.py in <module>()
27 from cycler import cycler
28 import matplotlib
---> 29 import matplotlib.colorbar
30 from matplotlib import style
31 from matplotlib import _pylab_helpers, interactive
/Users/tfridrich/anaconda/lib/python2.7/site-packages/matplotlib/colorbar.py in <module>()
32 import matplotlib.artist as martist
33 import matplotlib.cbook as cbook
---> 34 import matplotlib.collections as collections
35 import matplotlib.colors as colors
36 import matplotlib.contour as contour
/Users/tfridrich/anaconda/lib/python2.7/site-packages/matplotlib/collections.py in <module>()
25 import matplotlib.artist as artist
26 from matplotlib.artist import allow_rasterization
---> 27 import matplotlib.backend_bases as backend_bases
28 import matplotlib.path as mpath
29 from matplotlib import _path
/Users/tfridrich/anaconda/lib/python2.7/site-packages/matplotlib/backend_bases.py in <module>()
60
61 import matplotlib.tight_bbox as tight_bbox
---> 62 import matplotlib.textpath as textpath
63 from matplotlib.path import Path
64 from matplotlib.cbook import mplDeprecation, warn_deprecated
/Users/tfridrich/anaconda/lib/python2.7/site-packages/matplotlib/textpath.py in <module>()
13 from matplotlib.path import Path
14 from matplotlib import rcParams
---> 15 import matplotlib.font_manager as font_manager
16 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, LOAD_NO_HINTING
17 from matplotlib.ft2font import LOAD_TARGET_LIGHT
/Users/tfridrich/anaconda/lib/python2.7/site-packages/matplotlib/font_manager.py in <module>()
1419 verbose.report("Using fontManager instance from %s" % _fmcache)
1420 except:
-> 1421 _rebuild()
1422 else:
1423 _rebuild()
/Users/tfridrich/anaconda/lib/python2.7/site-packages/matplotlib/font_manager.py in _rebuild()
1404 def _rebuild():
1405 global fontManager
-> 1406 fontManager = FontManager()
1407 if _fmcache:
1408 pickle_dump(fontManager, _fmcache)
/Users/tfridrich/anaconda/lib/python2.7/site-packages/matplotlib/font_manager.py in __init__(self, size, weight)
1042 # Load TrueType fonts and create font dictionary.
1043
-> 1044 self.ttffiles = findSystemFonts(paths) + findSystemFonts()
1045 self.defaultFamily = {
1046 'ttf': 'Bitstream Vera Sans',
/Users/tfridrich/anaconda/lib/python2.7/site-packages/matplotlib/font_manager.py in findSystemFonts(fontpaths, fontext)
322 fontfiles[f] = 1
323
--> 324 for f in get_fontconfig_fonts(fontext):
325 fontfiles[f] = 1
326
/Users/tfridrich/anaconda/lib/python2.7/site-packages/matplotlib/font_manager.py in get_fontconfig_fonts(fontext)
274 pipe = subprocess.Popen(['fc-list', '--format=%{file}\\n'],
275 stdout=subprocess.PIPE,
--> 276 stderr=subprocess.PIPE)
277 output = pipe.communicate()[0]
278 except (OSError, IOError):
/Users/tfridrich/anaconda/lib/python2.7/subprocess.pyc in __init__(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags)
708 p2cread, p2cwrite,
709 c2pread, c2pwrite,
--> 710 errread, errwrite)
711 except Exception:
712 # Preserve original exception in case os.close raises.
/Users/tfridrich/anaconda/lib/python2.7/subprocess.pyc in _execute_child(self, args, executable, preexec_fn, close_fds, cwd, env, universal_newlines, startupinfo, creationflags, shell, to_close, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite)
1332 if e.errno != errno.ECHILD:
1333 raise
-> 1334 child_exception = pickle.loads(data)
1335 raise child_exception
1336
/Users/tfridrich/anaconda/lib/python2.7/pickle.pyc in loads(str)
1386 def loads(str):
1387 file = StringIO(str)
-> 1388 return Unpickler(file).load()
1389
1390 # Doctest
/Users/tfridrich/anaconda/lib/python2.7/pickle.pyc in load(self)
862 while 1:
863 key = read(1)
--> 864 dispatch[key](self)
865 except _Stop, stopinst:
866 return stopinst.value
/Users/tfridrich/anaconda/lib/python2.7/pickle.pyc in load_string(self)
970 if rep.startswith(q):
971 if len(rep) < 2 or not rep.endswith(q):
--> 972 raise ValueError, "insecure string pickle"
973 rep = rep[len(q):-len(q)]
974 break
ValueError: insecure string pickle
答案 0 :(得分：3)
将OS X更新为El Capitan后，我遇到了同样的问题。经过大量搜索后，我发现X X不再包含在OS X中（参见https://support.apple.com/en-us/HT201341），您需要安装XQuartz作为替代品（参见http://www.xquartz.org/）。在此之后，我能够成功导入matplotlib.pyplot。